28  Couche 7 : sockets mode non connecté

• Un exemple de client :

  def connexionServeurUDP(hote,service):
    infos=socket.getaddrinfo(hote,service,socket.AF_UNSPEC,socket.SOCK_DGRAM)
    res=infos[0];
    for info in infos:
      if(info[0]==socket.AF_INET6): res=info
    s=None
    (famille,mode,protocole,nom,asocket)=res
    try: s=socket.socket(famille,mode,protocole)
    except socket.error as msg:
      print('socket->'+str(msg),file=sys.stderr)
      sys.exit(1)
    return s,asocket
  

• Programme principal :

  import sys
  import time
  
  if len(sys.argv)!=3:
    print("Syntaxe : exec <serveur> <service>\n",file=sys.stderr)
    sys.exit(1)
  hote=sys.argv[1]
  service=sys.argv[2]
  s,ssocket=dgram_common.connexionServeurUDP(hote,service)
  if s!=None:
    while True:
      s.sendto(b"test !",0,ssocket)
      time.sleep(1)